At one point Troi declares that the two alien characters are like the sun and the moon - only one can be in ascension at any given time. Which means that despite passing the bridge officer's test last episode, she still isn't exactly the sharpest tool in the box. It's perfectly possible for the sun and moon to be up at once - think about it, how could you have an eclipse of the sun otherwise? Just keep an eye on the sky for the next couple of weeks, you'll see the moon up there during the daytime along with the sun.

Worst Moment :

The whole premise of the episode is clearly an excuse to allow Spiner to act outside the limitations of the role of Data. Unfortunately, he doesn't do a very good job of it.